MA330026 Microchip Technology, MA330026 Datasheet - Page 147

• Manufacturer Part Number: MA330026
• Description: Daughter Cards & OEM Boards dsPIC33FJ16MC102 Plug-In Module
• Manufacturer: Microchip Technology

Specifications of MA330026

• Rohs: yes
• Product: Plug-In Modules
• Core: PIC
• Data Bus Width: 16 bit
• Description/function: dsPIC33F MC 28 Pin QFN to 100 Pin Plug-in-Module
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 3 V to 3.6 V
• For Use With: DM330021, DM330022, DM330023

13.0
The Input Capture module is useful in applications
requiring frequency (period) and pulse measurement.
The
dsPIC33FJ16MC101/102 devices support up to eight
input capture channels.
FIGURE 13-1:
© 2011 Microchip Technology Inc.
dsPIC33FJ16GP101/102 AND dsPIC33FJ16MC101/102
Note 1: This data sheet summarizes the features
Note: An ‘x’ in a signal, register or bit name denotes the number of the capture channel.
ICx Pin
2: Some registers and associated bits
INPUT CAPTURE
of the dsPIC33FJ16GP101/102 and
dsPIC33FJ16MC101/102
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 12. “Input Cap-
ture” (DS70198) in the “dsPIC33F/
PIC24H Family Reference Manual”,
which is available from the Microchip web
site (www.microchip.com).
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization”
this data sheet for device-specific register
and bit information.
dsPIC33FJ16GP101/102
Prescaler
(1, 4, 16)
Counter
3
INPUT CAPTURE BLOCK DIAGRAM
System Bus
ICxCON
ICM<2:0> (ICxCON<2:0>)
ICOV, ICBNE (ICxCON<4:3>)
Mode Select
Edge Detection Logic
Clock Synchronizer
family
ICxI<1:0>
and
and
Preliminary
of
in
(in IFSn Register)
Set Flag ICxIF
Interrupt
Logic
The Input Capture module captures the 16-bit value of
the selected Time Base register when an event occurs
at the ICx pin. The events that cause a capture event
are listed below in three categories:
1.
2.
3.
Each Input Capture channel can select one of two
16-bit timers (Timer2 or Timer3) for the time base.
The selected timer can use either an internal or
external clock.
Other operational features include:
• Device wake-up from capture pin during CPU
• Interrupt on Input Capture event
• 4-word FIFO buffer for capture values:
• Use of Input Capture to provide additional
Sleep and Idle modes
- Interrupt optionally generated after 1, 2, 3, or
sources of external interrupts
Simple Capture Event modes:
• Capture timer value on every falling edge of
• Capture timer value on every rising edge of
Capture timer value on every edge (rising and
falling)
Prescaler Capture Event modes:
• Capture timer value on every 4th rising edge
• Capture timer value on every 16th rising
4 buffer locations are filled
input at ICx pin
input at ICx pin
of input at ICx pin
edge of input at ICx pin
FIFO
Logic
R/W
From 16-bit Timers
TMR2 TMR3
1
ICxBUF
16
0
DS70652C-page 147
16
ICTMR
(ICxCON<7>)